I’m replacing the fuel filler line from the neck to the tank. While trying to get it off the tank it pulled part of the flange off. Is this a replaceable part or should I just go with it? See pics
You won't find that part anywhere in the factory part diagrams. However, I want to say that's a common enough part that you could find it at a local auto part store in the hose and fittings section possibly.
I think you'll want to retain that piece, as the edge around it is what helps the hose seal properly when clamped down with a hose clamp.